Liquid-treating apparatus.



K. W. BARTLETT. LIQUID TREATING APPARATUS. APPLICATION TILEDBEPT.23,1907

926,843, Patented July 6, 1909.

UNITED STATES PATENT OFFICE.

KENT W. BARTLETT, OF MADISON, WISCONSIN, ASSIGNOR TO NORTHERN WATERSOFTENER COMPANY, OF MADISON, WISCONSIN, A CORPORATION OF MAINE.

LIQUID-TREATING APPARATUS.

Specification of Letters Patent.

Patented July 6, 1909.

Application filed September 23, 1907. Serial No. 394,233.

Madison, in the county of Dane and State of Wisconsin, have invented acertain new and useful Improvement in Liquid-Treating Apparatus, ofwhich the following is a full, clear, concise, and exact description,reference being had to the accompanying drawings, forming a part of thisspecification.

My invention relates to apparatus for governing the flow of material orliquid, and finds a very useful embodiment in water softening apparatus,and the invention will be specifically described as embodied in a watersoftening apparatus, though it is not to be limited. thereto.

It is one object of my invention to govern the supply of chemical to thesettling tank by the water before it is supplied to the settling tank,additional. chemical being supplied to the tank when additional water isadded to the tank. The same mechanism that controls the supply ofchemical to said tank desirably also controls the supply of additionalwater to the tank. The said mechanism preferably intermittently effectscommunication between the settling tank and the fresh water supply andbetween the settling tank and the chemical supply, said mechanismoperating when the water within a main supply tank has been drawn off toa predetermined extent for addition to the settling tank, the water, forpurposes hereinafter to be expressed, after having been passed off fromthe main supply tank, preferably finding lodgment first in a constantlevel chamber, from which it is then su plied to the settling tank.There is desirab y provided an adjusting means for governing the rate offlow either of the water flowing into the settling tank or of thechemical flowing into the settling tank, whereby the chemical and thewater may be suitably proportioned in quantity, there being preferablytwo adjusting devices, one for the water and the other for the chemical,though I do not wish to be limited to the use of the two adjustingdevices, as the proportions of chemical and water may be determined bythe use of but one adjusting device.

I will explain my invention more fully by reference to the accompanyingdrawings, showing the preferred embodiment thereof, in which Figure 1 isa view somewhat diagrammatic but sufficiently comprehensive to show thegeneral nature of the invention. Fig. 2 is a side elevation of a portionof the structure as it appears in Fig. 1. Fig. 3 is a side elevation ofthe bucket mechanism that preferably enters into my improved apparatus.Fig. 4 is a plan of the mechanism. shown in Fig. 3.

Like parts are indicated by similar characters of reference throughoutthe difiercnt figures.

The settling tank, which is of well-known construction, is indicatedat 1. Above it, there is illustrated a constant level chamber 2 thatreceives the water to be treated, and from which the water is dischargedinto the settling tank by the mechanism to be doscribcd. The constantlevel chamber receives water from the supply pipe 3 leading to a storagetank 3 there being a valve 42 of well-l-1nown construction includedwithin this pipe and governed in its action by a float 5 connectedtherewith, the float sinking whenever the level of the water in thecharm bar 2 recedes from its predetermined location to effect an.operation of the valve 4 to permit the supply of enough water to thechamber 2 to restore the level.

An. oscillating discharge pipe 6 has communication with the interior ofthe chamber 2, this pipe being mounted to oscillate upon a section ofpiping 7 extending toward the chamber 2 and including a valve 8, wherebythe rate of flow through the pipe 6 may be regulated. An adjustableriding weight 9 is mounted upon an extension 10 secured to the piping 6,whereby said piping is nicely balanced. A bucket 11 is swung from a bail1.2, which bail has a stem 13 that has connection with the extension 6by a chain 10 riding over pulleys 10 The weight of this bucket 11 issuch that when it is empty, the Jipe 6 will be raised by the weightoffered by extension 10 and the counterweight 9, but when this bucket isfull of water, sufdcicnt pull will be exerted upon the extension 10 tocause the pipe 6 to fall. The bucket 11 is filled when the water withinthe tank 3 reaches or has about reached its upper limiting level,whereupon the pipe 6 falls to permit the flow of water from the chamber2 to the settling tank. I provide restraining mechanism that preventsthe bucket from tipping, due to the weight of the water therein, untilthe water in the tank 3 has reached a predetermined lower level. {Vhenthis lower level has been reached, the bucket automatically rotates uponits bail pivots, due to the weight of the water in the bucket,permitting the water to empty into the chamber 14 to lighten the pullupon the extension 10, whereupon the pipe 6 swings upwardly to cut oilthe flow of water from the chamber 2 to the settling tank 1. A pipe 15permits the entry of water from the space about the chamber 14 (thischamber 14 being preterably within the tank 3 to the bucket 11. Saidbucket, after having received suflicient water from the pipe 15, causesthe depression of the pipe 6, by reason of the water in the bucket 11,to permit the flow of fresh water from the chamber 2 to the settlingtank. The chamber 14 itself to be kept suliiciently clear of water atall times to permit the weight of the water in the bucket 11 to beeflective in causmg the pipe 6 to lower and to be effective to cause atilt of the bucket when the restraining mechanism is relieved ofinfluence upon the bucket when the water in the main supply tank 3 hasreached the neighborhood of the lower limiting level. For this purpose Idesirably provide an eduction pipe 16 leading to any suitable place, asthe tank 2. After the bucket 11 has been relieved of the influence ofthe restraining mechanism thereupon, the water in the bucket causes thebucket to tilt, so as to empty the bucket, as has hitherto been setforth, where-alter the bucket, by reason of the disposition of the metalcomposing the same, restores itself to its vertical position, in whichposition the restraining mechanism may resume its influence upon thebucket upon the rise of the water in the main supply tank 3 I do not,however, wish to be limited to the form of restraining mechanism thatenters into the control of he bucket, nor do I wish to be limited to theuse of the bucket shown for accomplishing purposes herein set forth.

In the embodiment of the invention herein shown, the restrainingmechanism includes a float 17 o'l' comparatively large size, providedwith a vertically moving stem 18 suitably directed in its travel byguides 19, a lever 20 pivoted between its ends at 21 and having anadjustable counterweight upon one end and adapted for engagement withthe nose provided upon the upper end of a vertically traveling rod 24which. is directed in its travel by means of guides 25 projecting fromthe bail 12 of the bucket. The body of the bucket carries a cam lug 26adapted for engagement with a roller 27 provided upon the lower end ofthe rod 24, the vertical. face of the lug 26 normally engaging the saidroller to hold said bucket in vertical place. The rod 24 worksdownwardly by the force of gravity, said rod being limited in itsdownward travel by the lug 28 adapted for engagen'ient with the upperone of the guides 25, whereby the roller 27 is insured engagement withthe vertical 'l'ace of the lug The roller 27, when thus in engagementwith the lug 26, holds the bucket 11 in its vertical place, so that saidbucket may become filled to an extent that will force the depression olthe pipe 6. The bucket is maintained in vertical position until thefloat 17 has been permitted to descend a sutlicient distance, consequentupon the removal ol sullicient water from the main supply tank 3 thestem 18 then drawing the lever 20 downwardly and forcing engagementbetween the nose 23 and said lever 20, thereby efl ecting the elevationof the rod 24 and the disengagement of the roller 27 from the cam 26,the water in the bucket 1 1 thereupon efl'eeting the rotation of saidbucket to permit the water to be emptied therefrom, whereupon the weightfurnished by the water in the bucket to force 'a depression of the pipe6 is removed, permitting said pipe to rise to cut oil the flow of freshwater from the chamber 2 to the settling tank.

il hen the water has been emptied from the bucket 11, said bucket isimmediately restored to a vertical position and is bodily elevated bythe preponderating extension 10. The same mechanism that eflects theadmission of fresh water to the settling tank desirably also controlsthe admission of chemical to the settling tank, to which end I provide achain connection 8 between the bucket mechanism and the chemicaldischarge spout 29 which is desirably swingingly mounted or rctativelymounted as is the water discharge pipe 6, this chemical discharge pipehaving communication with a chemical reservoir 30.

The discharge spouts 6 and 29 are, by the apparatus illustrated,permitted to be ele vated at the same time and to be lowered at the sametime, so that the flow oi l'resh water and fresh chemical to thesettling tank begins and ends substantially sinmltaneously. I do notwish to be limited to the use ol swinging spouts for controlling theadmission of chemical and water to the settling tank. The spout 29 isdesirably provided with an adjustable weight 81 to adjust the force with7 which said spout may fall, while the extent to which said spout 29 mayfall may be regu-- lated by an adjustable hook and chain connection 32.

The source cl immediate supply ol cheniical to the discharge spout 2%,is of novel construction, and terms the subject-matter of my co-pendingapplication Serial No. 39%,232, iiled September 23, 1907, whichcopending application relates broadly to other -features herein.disclosed and 'l'orniing the subject-matter oi the claims herein.

As indicated in i is. 1, there is illustrated a jacket about the upperend. of the chamber 30, a supply pipe 35 leading to the chamber 30 Whilean eduction pipe 36 leads from the jacket chamber 34, which latter piperemoves the chemical which overflows from the chamber 3O into thesurrounding chamber 34. ih pump 37 forces the chemical from a suitablechemical reservoir 38 through the pipe 35 to the chamber 30, from whichchamber the chemical is either totally discharged through the chamber 34and the pipe 36 or is but i 'iartially discharged through said latterchamber and pipe When. the chemical is beir iiseharggeiil ti'irough thespout 29. this arrangement a uniform quantity of liquid chemical isalways present to insure a uniform flow ol' the chemical through thespout 29.

By reason of the constant level chamber 2 and the chemical supplychai'nber 30, the Water and liquid chemical are supplied to the settlingchamber at uniform pressures, insuring the supply to the tank of correctproportions oi water and chemical. The Water either flows at a liiitlti.pressure and volume or not at all and the chemical is either iloW- ingat a lined pressure and volume or not at all I prefer the chemical inliquid form For supply to the settling; tank. By liquid chemical l donot necessarily mean a solution, as the chemical. may beheld insuspension within the Water, the Water With the suspended chemicalconstituting a liquid chelinical l use the expression.

1 have herein shown my invention as ombodied in water sol'tening'apparatus, but l do not Wish to be limited to this application of theinvention, as desire to have the invention protected irrespective of theuse to which it is put.

Having thus described my invention, l. claim as new and desire to secureby Letters Patentthe following 1* 1. Apparatus of the class describedincluding a main supply tank, a constant level chamber ior receivingliquid therefrom, a receiving tank lor receiving liquid from theconstant level chamber, and mechanism for governing the admission ofliquid to the receiving tank and operated by the liquid Within the mainsupply tank when the liquid Within the main supply tank has reached apredetermined upper level to permit the :llorv of liquid from theconstant level chamber to the receiving tank, and operable when theliquid in the main supply tank has reached a predetermined lower levelto cut oil the supply of liquid from the constant level cham her to thereceiving tank.

.2. ilrpparatus oi. the class described including a main supply tank, aconstant level chamber for receiving liquid therefrom, a receiving tankfor receiving liquid from the constant level chamber, mechanism forgoverning the admission. of liquid to the receiving tank and operated bythe liquid Within the main supply tank when the liquid Within the mainsupply tank has reached a predetermined upper level to permit the flowof liquid from the constant level chamber to the receiving tank, andoperable When the liquid in the main supply tank has reached apredetermined lower level to cut oil the supply of liquid from theconstant level chamber to the receiving tank, and restraining mechanismgoverned by the liquid. in the main supply tank for preventing; theaforesaid mechanism from operating;- during the time the liquid in thetank is descending from one level to the other.

3. Apparatus oi the class described includ ing a main supply tank, aconstant level chamber -for receiving liquid therefrom, a receiving;tank for receiving liquid from the constant level chamber, mechanism forgovending the admission of liquid to the receiving; tank and operated bythe liquid Within the main supply tank when the liquid within the mainsupply tank has reached a predetermined upper level to permit the flowof liquid from the constant level chamber to the receiving tank, andoperable When the liquid in the main supply tank has reached a predetermined lower level to cut oil the supply of liquid from the constantlevel chamber to the receiving tank, and means for eflecting the supplyof chemical to the settling tank, governed by the mechanism which iscontrolled by the liquid in the main supply tank.

l. Apparatus of the class desoribei'l including a main supply tank,constant level chamber for receiving liquid therefrom, a receiving tankfor receiving liquid from the constant level chamber, mechanism for governing the admission oi liquid to the receiving tank and operated by theliquid Within the main supply tank When the liquid withiiil the mainsupply tank has reached a predetermined upper level to permit the ilowof liquid from the constant level chamber to the receiving tank, andoperable when the liquid in the main supply tank has reached apredetermined lower level to cut oil the supply of liquid irom theconstant level chamber to the receiving tank, restraining mechanismgoverned by the liquid in the main supply tank for preventing theaforesaid mechanism from operating during the time the liquid in thetank is descending from one level 'to the other, and means for effectingthe supply of chemical to the receiving tank, governed by the mechanismwhich is controlled by the liquid in the main supply tank.

5. Apparatus of the class described including a supply tank, a receivingtank for receiving the liquid from the supply tank, and mechanism forgoverning the admission of said liquid to the receiving tank andoperated by the liquid within the supply tank when the liquid within thesupply tank has reached a predetermined upper level to perniit the flowof said liquid to the receiving tank, and operable when the liquid inthe supply tank has reached a predetermined lower level to cut oil' thesupply of said liquid to the receiving tank.

6. Apparatus oi' the class described including a supply tank, areceiving tank for receiving the liquid from the supply tank, mechanismfor governing the admission of said liquid to the receiving tank andoperated by the liquid within the supply tank when the liquid within thesupply tank has reached a predetermined upper level to permit the ilowof said liquid to the receiving tank, and operable when the liquid inthe supply tank has reached a predetermined lower level to cut oil thesupply of said liquid to the receiving tank, and restraining mechanismgoverned by the liquid in the supply tank for pr venting the aforesaidmechanism from operating during the time the said liquid in the tank isdescending from one level to the other,

7. Apparatus of the class described including a supply tank, a receivingtank for receiving the liquid from the supply tank, mechanism forgoverning the admission of said liquid to the receiving tank andoperated by the liquid within the supply tank when the liquid within thesupply tank has reached a predetermined upper level to permit the flowof said liquid to the receiving tank, and. operable when the liquid inthe supply tank has reached a predetermined lower level to cut oil thesupply of said liquid to the receiving tank, and means for effecting thesupply of chemical to the receiving tank, governed by the mechanismwhich is controlled by the liquid in the supply tank.

8. Apparatus oi the class described including a supply tank, a receivingtank for receiving the liquid from the supply tank, mechanism forgoverning the admission of said liquid to the receiving tank andoperated by the liquid within the supply tank w ion the liquid withinthe supply tank has reached a predetermined upper level to permit thehow of said liquid to the receiving tank, and operable when the liquidin the supply tank has reached a predetermined lower level to cut oilthe supply of said liquid to the receiving tank, restraining mechanismgoverned by the liquid in the supply tank for preventing the aforesaidmechanism from operating during the time the said liquid in the tank isdescending from one level to the other, and

means for effecting the supply of chemical to the receiving tank,governed by the mechanism which is controlled by the liquid in thesupply tank.

9. Apparatus oi the class described including a supply tank, a receivingtank for receiving liquid from the supply tank, a source of chemicalsupply, and mechanism for governing the admission of chemical to thereceiving tank operated by the liquid within the supply tank when theliquid Within the supply tank has reached a predetermined upper level topermit the 'ilOW of chemical to the receiving tank, and operable whenthe liquid in the supply tank has reached a predetermii'ied lower levelto cut oil the supply of chemical to the receiving tank.

10. Apparatus of the class described including a supply tank, areceiving tank for receiving liquid from the supply tank, a source ofchemical supply, mechanism for governing the admission of chemical tothe receiving tank operated by the liquid within the supply tank whenthe liquid within the supply tank has reached a predetermined upperlevel to permit the flow of chemical to the receiving tank, and operablewhen the liquid in the supply tank has reached a pre determined lowerlevel to cut oil' the supply of chemical to the receiving tank, andrestraining mechanism governed by the liquid in the supply tank forpreventing the aforesaid mechanism from operating during the time thesaid liquid in the tank is descending from one level to the other.

11. Apparatus of the class described including a supply tank, areceiving tank for receiving liquid from the supply tank, a source ofchemical supply, mechanism for governing the admission of chemical tothe receiving tank operated by the liquid within the supply tank whenthe liquid within the supply tank has reached a predetermined upperlevel to permit the flow of chemical to the receiving tank, and operablewhen the liquid in the supply tank has reached a predetermined lowerlevel to cut oil the supply of chemical to the receiving tank, and meansfor effecting the supply of chemical to the receiving tank, governed bythe mechanism which is controlled by he liquid in the supply tank.

12. Apparatus of the class described including a supply tank, areceiving tank for receiving liquid from the supply tank, a source ofchemical supply, mechanism for governing the admission of chemical tothe receiving tank operated by the liquid within the supply tank whenthe liquid within the supply tan t nas reached a predetermined upperlevel to permit the How of chemical to the receiving tank, and operablewhen the liquid in the supply tank has reached a pre determined lowerlevel to cut o'li the supply of chemical to the receiving tank,restraining mechanism governed. by the liquid in the supply tank forpreventing the aforesaid mechanism from operating during the time thesaid liquid in the tank is descending from one level to the other, andmeans for effecting the supply of chemical to the receiving tank,governed by the mechanism which is controlled by the liquid in thesupply tank.

13. Apparatus of the class described including a main supply tank, aconstant level chamber for receiving liquid therefrom, a receiving tankfor receiving liquid from the constant level chamber, and mechanism forgoverning the admission of liquid to the re ceiving tank and operated bythe liquid within the main supply tank when the liquid within the mainsupply tank has reached a undetermined upper level to permit the flow ofliquid from the constant level chamher to the receiving tank, andoperable when the liquid in the main supply tank has reached apredetermined lower level to cut off the supply of liquid from theconstant level chamber to the receiving tank, the mechanism governed bythe liquid in the supply tank including a bucket, which, whensufficiently empty of liquid, will be ineffective, but which, whensufficiently full of liquid, will be effective.

14. Apparatus of the class described in eluding a main supply tank, aconstant level chamber for receiving liquid therefrom, a receiving tankfor receiving liquid from the constant level chamber, mechanism forgoverning the admission of liquid to the receiving tank and operated bythe liquid within the main supply tank when the liquid with in the mainsupply tank has reached a predetermined. upper level to permit the flowof liquid from the constant level chamber to the receiving tank, andoperable when the liquid in the main supply tank has reached apredetermined lower level to cut oil the supply of liquid from theconstant level chamber to the receiving tank, and restraining mechanismgovernei'l by the liquid in the main supply tank for preventing theaforesaid mechanism from operating during the time the liquid in thetank is descending from one level to the other, the mechanism governed.by the liquid in the supply tank including a bucket, which, whensufliciently empty of liquid, will be inefi'ective, but which, whensufficiently full of liquid, will be effective, the restrainingmechanism includ ing a float and mechanism operated thereby forpreventing the discharge of liquid from the bucket while the liquid isdescending from one level to another, said float mechanism operatingwhen the liquid in the supply tank rises to permit the liquid to emptyfrom the bucket.

15. Apparatus of the class described ineluding a main supply tank, aconstant level chamber for receiving liquid therefrom, a re ceiving tankfor receiving liquid from the constant level chamber, mechanism forgoverning the admission of liquid to the receiving tank and operated bythe liquid within the main supply tank when the liquid within the mainsupply tank has reached a predetermined upper level to permit the flowof liquid from the constant level chamber to the receiving tank, andoperable when the liquid in the main supply tank has reached apredetermined lower level to cut off the supply of liquid from theconstant level chamber to the receiving tank, and means for effectingthe supply of chemical to the receiving tank, governed by the mechanismwhich is controlled by the liquid in the main supply tank, the mechanismgoverned by the liquid in the supply tank including a bucket, which,when sufficiently empty of liquid, will be ineffective, but which, whensufiiciently full of liquid, will be effective.

16. Apparatus of the class described including a main supply tank, aconstant level chamber for receiving liquid therefrom, a receiving tankfor receiving liquid from the constant level chamber, mechanism forgoverning the admission of liquid to the receiving tank and operated bythe liquid within the main supply tank when the liquid within the mainsupply tank has reached a predetermined upper level to permit the ilowof liquid from the constant level chamber to the receiving tank, andoperable when the liquid in the main supply tank has reached apredetermined lower level to cut off the supply of liquid from theconstant level chamber to the receiving tank, restraining mechanismgoverned by the liquid in the main supply tank for preventing theaforesaid mechanism from operating during the time the liquid in thetank is descending from one level to the other, and means for effectingthe supply of chemical to the receiving tanl" governed by the mechanismwhich is controlled by the liquid in the main supply tank, the mechanismgoverned by the liquid in the supply tank including a bucket, which,when sufficiently empty of liquid, will be in effective, but which, whensufiieiently full of liquid, will be effective, the restraining mechanism including a float and mechanism operated thereby for preventingthe discharge of liquid from the bucket while the liquid is descendingfrom one level to another, said float mechanism operating when theliquid in the supply tank falls to permit the liquid to empty from thebucket.

17. 1i.p aratus of the class described including a supply tank, areceiving tank for receiving the liquid from the supply tank, andmechanism for governing the admission of said liquid to the receivingtank and operated by the liquid within the supply tank when. the liquidwithin the supply tank has reached a predetermined upper level to permitthe flow of said liquid to the receiving tank, and operable when theliquid. in the supply tank has reached a predetermined lower level tocut oil the supply of said liquid to the receiving tank, the mechanismgoverned by the liquid in the supply tank including a bucket, which,when su'l'liciently em 'ity of liquid, will be ine'l'lective, but which,when. sul'l'iciently full of liquid, will be ellective.

18. Apparatus of the class described in cluding a supply tank, areceiving tank for receiving the liquid from the supply tank, mechanismfor governing the admission of said liquid to the receiving tank andoperated by the liquid within the supply tank when the liquid Within thesupply tank has reached a predetermined upper level to permit the flowof said liquid to the receiving tank, and operable when the liquid inthe supply tank has reached a predetermined lower level to cut oil thesupply of said liquid to the receiving tank, and restraining mech anismgoverned by the liquid in the supply tank for preventing the aforesaidmechanism from operating during the time the said liquid in the tank isdescending from one level to the other, the mechanism governed by theliquid in the supply tank including a bucket, which, when su'l'licientlyempty of liquid, will be inellective, but wl'iich, when sullicientlyfull of liquid, will be e'l lective, the restraining mechanism includinga float and mechanism operated thereby for preventing the discharge ofliquid* from the bucket wnile the liquid is descending from one level toanother, said float mechanism operating when the liquid in the supplytank falls to permit the liquid to empty from the bucket.

19. Apparatus of the class described including a supply tank, areceiving tank for receiving the liquid from the supply tank, mechanismfor governing the admission of said liquid to the receiving tank andoperated by the liquid. within the supply tank when the liquid withinthe supply tank has reached a predetermined upper level to permit thellOW of said liquid to the receiving tank, and operable when the liquidin the supply tank has reached a predetermined lower level to cut offthe supply ol said liquid to the receiving tank, and means for effectingthe supply of chemical to the receiving tank, governed by the mechanismwhich is controlled by the liquid in the supply tank, the mechanismgoverned. by the liquid in the supply tank including a bucket, which,when sulliciently empty of liquid, will be incll'ective, but which, whensufliciently full of liquid, will be effective.

20. Apparatus of the class described including a supoly tank, areceiving tank for receiving the liquid from the supply tank,

mechanism for governing the admission of said liquid to the receivingtank and operated by the liquid within the supply tank when the liquidwithin the supply tank has reached a predetermined upper level to permitthe How of said liquid to the receiving tank, and operable when theliquid in the supply tank has reached a predetermined lower level to cutoff the supply of said liquid to the receiving tank, restrainingmechanism governed by the liquid in the supply tank for preventing theaforesaid mechanism from operatin during the time the said liquid in thetank is descending from one level to the other, and means for effectingthe supply of chemical to the receiving tank, governed by the mechanismwhich is controlled by the liquid in the supply tank, the mechanismgoverned by the liquid in the supply tank including a bucket, which,when suliiciently empty of liquid, will be ineffective, but which, whensui'liciently lull of liquid, wil be efllective, the restrainingmechanism including a float and mechanism operated thereby forpreventing the discharge of liquid -from the bucket while the liquid isdescending from one level to another, said float mechanism operatingwhen the liquid in the supply tank falls to permit the liquid to emptyfrom the bucket.

21. Apparatus ol' the class described including a supply tank, areceiving tank for receiving liquid from the supply tank, a source ofchemical supply, and mechanism for governing the admission of chemicalto the receiving tank operated by the liquid within the supply tank whenthe liquid within the supply tank has reached a predetermined uppcrlevel to permit the flow of chemical to the receiving tank, and operablewhen the liquid in the supply tank has reached a predetermined lowerlevel to cut oil' the supply of chemical to the receiving tank, themechanism governed by the liquid in the supply tank including a bucket,which, when suiliciently empty of liquid, will be ineffective, butwhich, when sulliciently full of liquid, will be efl'ective 22.Apparatus of the class described including a supply tank, a receivingtank for receiving liquid from the supply tank, a source of chemicalsupply, mechanism for governing the admission of chemical to thereceiving tank operated by the liquid within the supply tank when. theliquid within the supply tank has reached a predetermined upper level topermit the flow of chemical to the receiving tank, and operable when theliquid in the supply tank has reached a predetermined lower level to cutoil' the supply of chemical to the receiving tank, and restrainingmechanism governed by the liquid in the supply tank for preventing theaforesaid mechanism from operating during the time the said liquid inthe tank is descending Cir from one level to the other, the mechanismgoverned by the liquid in the supply tank includin a bucket, which, whensulliciently empty of liquid, will be ineffective, but Which, whensufficiently full of liquid, will be effective, the restrainingmechanism including a float and mechanism operated thereby forpreventing the discharge of liquid from the bucket While the liquid isdescending from one level to another, said float mechanism operatingWhen the liquid in the supply tank falls to permit the liquid to emptyfrom the bucket.

23. Apparatus of the class described including a supply tank, areceiving tank for receiving liquid from the supply tank, a source ofchemical supply, mechanism for governing the admission of chemical tothe receiving tank operated by the liquid Within the supply tank whenthe liquid within the supply tank has reached a predetermined u perlevel to permit the flow of chemical to t 1e receiving tank, andoperable when the liquid in the supply tank has reached a predeterminedlovver level to cut oil the supply of chemical to the receiving tank,and means for eiiecting the supply of chemical to the receiving tank,governed by the mechanism Which is controlled by the liquid in thesupply tank, the mechanism governed by the liquid in the supply tankincluding a bucket, which, When sullicicntly empty of liquid, Will beinellective, but which, when sulliciently lull of liquid, Will beellective.

24. Apparatus ol' the class described including a supply tank, areceiving tank for receiving liquid from the supply tank, a source ofchemical supply, mechanism for governing the admission of chemical tothe receiving tank operated by the liquid Within the supply tank Whenthe liquid Within the supply tank has reached a predetermined upperlevel to permit the flow of chemical to the receiving ta. and operablewhen the liquid in the supply tank has reached a predetermined loWcrlevel to cut oil the supply oi chemical to the receiving tank,restraining mechanism governed. by the liquid in the supply tank forpreventing the aforesaid mechanism from operating during the time thesaid liquid in the tank is descending from one level to the other, andmeans for effecting the supply of chemical to the receiving tank,governed by the mechanism which is controlled by the liquid in thesupply tank, the mechanism governed by the liquid in th supply tankincluding a bucket, which, when su'liiciently empty of liquid, will beineffective, but which, when sulliciently full of liq uid, will beelleetive, the restraining mechanism including afloat and mechanismoperated thereby for preventing the discharge of liquid from the bucketWhile the liquid is descending from one level to another, said floatmechanism operating when the liquid in the supply tank falls to permitthe liquid to empty from the bucket.

25. An apparatus of the class described including a receiving tank, asource of liquid supply therefor, an oscillating spout havingcommunication at one end with the source of liquid supply and adapted atits other end to discharge liquid flowing from said supply, andmechanism for controlling the oscillation of the spout to prevent orpermit the flow of liquid therethrough from said source of sup ply and,in turn, governed by the liquid in the source of liquid supply.

26. An apparatus of the class described including a receiving tank, asource of liquid supply there'l'or, a source of material supply, anoscillating spout having communication at one end with the source ofmaterial supply and adapted at its other end to discharge said materialflowing from said material supply, and mechanism for controlling theoscillation of the spout to prevent or permit the flow of materialtherethrough from said source of material supply and, in turn, governedby the liquid in the source of liquid supply.

2-7. An apparatus of the class described including a receiving tank, asource of liquid supply therefor, an oscillating spout havingcommunication at one end with the source of liquid supply and adapted atits other end to discharge liquid ilovving from said supply, andmechanism for controlling the oscillation of the spout to prevent orpermit the flow of liquid therethrough from said source of sup ply and,in turn, governed by the liquid Without it being passed to the tank.

28. An apparatus of the class described including a receiving tank, asource of liquid supply therefor, a source of material supply, anoscillating spout having communication at one end with the source ofmaterial supply and adapted at its other end to discharge said materialflowing from said material supply, and mechanism for controlling theoscillation of the spout to prevent or permit the flow of materialtherethrough from said source of material supply and, in turn, governedby the liquid Without it being passed to the tank.

29. An apparatus of the class described including a tank, a source ofliquid supply therefor, a bucket adapted to receive and be operated byliquid from the liquid source Without the liquid being first dischargedinto the tank, source of material supply, and mechanism governed by saidbucket for controlling the :l'lovv of liquid from said source of liquidsupply to said tank and for controlling the flow of material from saidsource of material supply to the tank.

80. Apparatus for chemically treating liquids including a tank, a sourceof liquid supply, a source of chemical supply, and mechanism governed bythe liquid in the source of liquid supply, and serving when the liquidin the liquid supply reaches one level, to estebi my name this 12th dayof September A. D., lish the flow of chemical from said source of 1907chemical supply to the tank, and when the Ir Nrn BE RTI @TT liquid inthe source of liquid supply reaches l l L in an alternative level, tocut Off the flow 0f Witnesses:

chemical to the tank. G. L. CRAGG,

In Witness whereof, I hereunto subscribe L. G. STROH.

